Volvo 819 E - Page 59

Group 28 Ignition s ystems
Des ign and function - System descriptions
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EZ-115K
Control unit connections
2. Receives signal from temperat ure sensor (84) (7/16 ).
3. Tr ansmi ts fault si gnals to te st term inal (417) (17/4) when test di ode is connected .
4.
Transmits knock -co ntrolled fuel en ric hment signal to fuel sys tem control uni t (217) ( 418) .
6.
Re ce ives s upp ly from battery (1) (1 /1) across ignition sw itch (2) (31 1).
7. Receives id ling signal from throttle switch (198) (3/49 ).
8. Receives toad sig nal fr om air mass met er (284) (7/17) via fuel s yst em control unit (2 17) (418).
10. Receives signals fr om speed /posi t ion pick- up ( 41 3) (7/25).
11 . Gr ounds screen of lead from speed/p osi t ion pick-up ( 4131 (71 25 ),
12. Grounds screen of lead fr om knock sensor I ( lH ) (218) (7/23).
13. Receives
signal from knock senso r I ( lH) (2181 (7123) .
16. Transm its ignit ion pulses to po wer stage (419) (4115 ).
17. Tr ansmi ts speed inf orma t ion to fuel system co ntrol unit ( 217 )1 418 ).
la . Receives signal from No. 1 cylinde r detector (416) (7126 ).
19. Re ceiv es signal fr om No . 1 cylinde r det ector (416) (7126).
20. Grounds control un it (260) (41 10).
21 . G round s screen of lead from No. 1 cy linder detector (416) (7/26 ).
23. Receives signals from speed/posi tion pick- up (413) (7/25).
24.
Grounds sc reen of lead fr om knock sensor II ( RH ) (2 18) (7/24 ).
25. Re ceives signal from kno ck sensor II ( RH ) (218) (7/24 ).
Power stage connections
1. Controls current in i gnition coil (4) ( 21 /1) primary w indi ng .
2.
Grounds power stage ( 41 9) (4115 ).
3. Grounds screen of l ead from co ntrol un it ( 2601 { 41101 termina l 16.
4. Receives
supply fr om battery (1) (1/1) across i gnition s wit ch (21 (311).
5. Re ceives igni t ion pulses from control un it (260) (4110 ).
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